JP2020173482A5 - - Google Patents
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- Publication number
- JP2020173482A5 JP2020173482A5 JP2020123590A JP2020123590A JP2020173482A5 JP 2020173482 A5 JP2020173482 A5 JP 2020173482A5 JP 2020123590 A JP2020123590 A JP 2020123590A JP 2020123590 A JP2020123590 A JP 2020123590A JP 2020173482 A5 JP2020173482 A5 JP 2020173482A5
- Authority
- JP
- Japan
- Prior art keywords
- dealer
- key
- user
- secret information
- encrypts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Claims (1)
前記システムは、ユーザのＩＤと、秘密情報の分散値を保存するｃ（＝ｎ−（ｂ−１）、ｂ≦ｋ、ｃ＜ｋ）個のサーバのＩＤとを有するディーラと、鍵を有するｂ−１個の鍵サーバと、を有し、
前記ディーラは、ユーザのＩＤを前記ｂ−１個の鍵サーバのうちの一部に送信し、
前記ｂ−１個の鍵サーバのうちの一部の各々は、前記ディーラから送信された前記ユーザのＩＤを、自分の持つ前記鍵で暗号化し、且つ、前記暗号化により得られた値を、前記ディーラに送信し、
前記ディーラは、受信した前記値で、秘密情報を暗号化する、
システム。 It is a system that distributes secret information to n pieces and collects k pieces of distributed values to restore the secret information, and k-1 or less cannot restore the secret information.
The system has a dealer having a user ID and c (= n- (b-1), b≤k, c <k) server IDs for storing the distributed value of confidential information, and a key. b-1 with one key server,
The dealer sends the user's ID to a part of the b-1 key servers.
Each of a part of the b-1 key servers encrypts the user's ID transmitted from the dealer with the key owned by the dealer, and the value obtained by the encryption is used. Send to the dealer
The dealer encrypts the confidential information with the received value.
system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020123590A JP2020173482A (en) | 2020-07-20 | 2020-07-20 | Dealer, key server, and restoration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020123590A JP2020173482A (en) | 2020-07-20 | 2020-07-20 | Dealer, key server, and restoration device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019148375A Division JP6876340B2 (en) | 2019-08-13 | 2019-08-13 | Dealers, key servers, and restorers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020173482A JP2020173482A (en) | 2020-10-22 |
| JP2020173482A5 true JP2020173482A5 (en) | 2021-07-26 |
Family
ID=72831313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020123590A Pending JP2020173482A (en) | 2020-07-20 | 2020-07-20 | Dealer, key server, and restoration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2020173482A (en) |
-
2020
- 2020-07-20 JP JP2020123590A patent/JP2020173482A/en active Pending
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